The action level for copper is 1.3 mg/L and for lead it is ________ mg/L.

The action level for copper is 1.3 mg/L and for lead it is ________ mg/L.

• A. 0.015
• B. 0.013
• C. 0.0015
• D. 0.15

Answer: (A)

Lead has a much stricter action level than copper because even small amounts of lead pose serious health risks. Under the Lead and Copper Rule, the action level for copper is 1.3 mg/L, while for lead it is 0.015 mg/L. That 0.015 mg/L equals 15 micrograms per liter or 15 parts per billion, which reflects the aggressive limit for lead exposure. If more than a certain percentage of samples exceed this level, systems must take corrective actions to reduce corrosion and protect customers. The other numbers don’t match the established lead action level.

Lead has a much stricter action level than copper because even small amounts of lead pose serious health risks. Under the Lead and Copper Rule, the action level for copper is 1.3 mg/L, while for lead it is 0.015 mg/L. That 0.015 mg/L equals 15 micrograms per liter or 15 parts per billion, which reflects the aggressive limit for lead exposure. If more than a certain percentage of samples exceed this level, systems must take corrective actions to reduce corrosion and protect customers. The other numbers don’t match the established lead action level.